steelhunter wrote:
https://www.amazon.com/PEAK-Marine-Antifreeze-50%C2%B0F-Guaranteed/dp/B07MBQ5YX3
https://www.walmart.com/ip/Super-Tech-RV-Marine-Antifreeze/17179674
The stuff from Amazon costs a lot more because there's shipping, packaging & handling costs buried in the "free shipping" price. If anyone thinks there really is "free" shipping in this world, then pigs really can fly... :R
If you go to the right places, you can get the PG AF at a minimal cost above the retail store pricing on the cheapo ethanol-based version. Most people don't understand there's two types of AF and buy based on sticker price. I get the PG type at a nearby independent RV repair/parts shop at a cost slightly above retail stores or RV dealers that sell the ethanol-based version.
The propylene glycol antifreeze is the good stuff and a much better choice. Won't evaporate and dry out in toilet or p-traps, will help lubricate seals, won't taint plumbing lines, is non-toxic and is non-flammable.
If you look at a jug of it in a store, read the label for the contents. Sometimes it's hard to find or the print is small and hard to read.
FWIW, I always blow our lines out when winterizing. Easy to do and a lot less AF is needed.
